HP ProLiant BL20p G3 Server Blade - Manual (Page 85)

Connecting Local I/O Devices
HP ProLiant BL20p Generation 3 Server Blade User Guide 6-7
4. Connect the following to the USB hub:
a. USB CD-ROM (4) and/or a USB diskette drive
b. USB keyboard (5)
c. USB mouse (6)
NOTE: HP recommends the use of a USB hub when connecting a USB floppy and/or USB
CD-ROM drive to the server blade. This provides more available connections.
Figure 6-4: Directly connecting local media devices to
the server blade using a USB hub